Centrifugal pump.



PATENTED JULY 25, 1905.

L. P. ERIGKSON. GENTRIFUGAL PUMP. APPLIUATION FILED OCT. 11, 1904.

2 SHEETS-SHEET Z UNITED .sTAT Es PATENT OFFICE.

LEWVIS P. ERIOKSON, OF JENNINGS, LOUISIANA, ASSIGNOR TO DOBBINS IRONWORKS, LIMITED, OF JENNINGS, LOUISIANA, A CORPORATION OF LOUISIANA.

CENTRIFUGAL PUMP.

10 all whom it Wtay concern.-

Be it known that I, LEWIS P. ERICKSON, a citizen of the United States,residing. at J ennings, in the parish of Oalcasieu and State ofLouisiana, have invented a new and useful Centrifugal Pump, of which thefollowing is a specification.

readily mounted on a well-casing and capable of reducing the friction toa minimum.

With these and other objects in view the invention consists in theconstruction and novel combination and arrangement of parts hereinafterfully described, illustrated in the accompanying drawings, and pointed.out in the claims hereto appended, it being understood that variouschanges in the form, proportion, size, and minor details of constructionwithin the scope of the claims may be resorted to without departing fromthe spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is a side elevation, partly in section, ofacentrifugal pump constructed in accordance with this invention. Fig. 2is an enlarged sectional view of'the upper portion of the pump,illustrating the manner of supporting'and journaling the vertical shaft.Fig. 3 is a detail View illustrating the manner of mounting thedischarge-spout. Fig. 4 is a horizontal sectional view illustrating themanner of mounting the frame on the upper end of the well-casing. Figs.5 and 6 are detail views of the centrifugal water- 'wheel.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

1 1 designate parallel vertical side bars or beams of an oblongsupporting-frame which is mounted upon the upper end of a well-casing 2,as clearly illustrated in Fig. 1 of the drawings. The side bars 1 areconnected at the top and at an intermediate point by crossbars 3 and 4,the cross-bar 3 being secured to Specification of Letters Patent.

Application filed October 11, 1904. Serial No. 228,052.

Patented July 25, 1905.

the upper ends of the side bars 1 and the other cross-bar i beinginterposed between the side bars at the upper portions thereof. The sidebars and the upper cross-bars are preferably constructed of wood, andthe lower portions of the side bars are connected by metal straps orbars 5 and 6, arranged in pairs and secured to the side bars at theopposite faces thereof. These metal straps or bars 5 and 6 areoppositely bowed at the center to provide curved portions 7 forembracing the well-casing. The ends of the metal bars or straps areperforated for the reception of bolts 8 or other suitable fasteningd'evices, whereby the straps or bars are securely fastened to the sidesof the frame and are firmly clamped on the wellcasing.

The upper cross-bars 3 and 4' are pierced by the upper portion of thevertical shaft 9, which carries the rotary waterwheels '10,

a and the said cross-bars 3 and 4 are provided with bearing-sleeves 11and 12, which extend entirely through the same, as clearly shown in Fig.2. The upper sleeve 11 is provided at its top with a horizontal annularflange 13, seated in a recess of the cross-bar and provided with anannular groove or ball-race 14 for the reception of an annular series ofantifrictionballs 15. The antifriction-balls 15 support a bearing-plate16, provided at its lower face with an annular groove or race andengaged by a coiled cushioning-spring 17. The lower bearing-sleeve,which is constructed in a similar manner, is provided at its top with aflange 18, having a groove 19 for the reception of antifriction-balls20, and the latter are engaged by a bearing-plate 21, which is securedto the shaft9 by a clamping-screw 22 or other suitable means. at itsupper face with an extension or sleeve, on which is mounted theclamping-screw 22. The coiledcushioning-spring 17 is interposed betweenthe upper bearing-plate 16 and an adjusting-nut 23, which is engaged bya jam nut 24. The nuts are mounted on the upper end 25 of the shaft,which is threaded, as shown. The spring is adapted to equalize thepressure on the bearings of the cross-bars 3 and 4:, whereby thefriction is reduced to a minimum.

One or more of the rotary water-wheels may be employed, and each of therotary water-wheels comprises an inner vertical hub 26, an outercylindrical rim 27, and a plurality of The bearing-plate 21 is providedspirally-arranged blades 28. The cylindrical. rim is of a diameter tofit snugly within the well-casing, there being a slight inters-pacebetween the two parts, as clearly shown in Fig. 5, and the upper andlower edges 29 of the rim are rounded, as shown. By this construction aWater-cushion is formed around the rotary Water-wheels, and it isunnecessary to step the lower end of the vertical shaft in a bearing orotherwise guide the same. This also reduces the friction of the pump toa minimum.

The rim 27 extends slightly above the upper end of the hub, and thelatter projects slightly below the lower edge of therim. The blades havecurved spirally-arranged inner and outer edges, which are secured,respectively, to the hub and to therim. The-inner edge of each bladeext'endsfrom the upper portion of'the hub to the lower portion thereof,and the lower portions 30 of the blades project below the lower edge ofthe rim, as clearly shown in Fig. 5. The advantage-derived from thisparticular arrangement is that the extended portions of'the blades startthe water through the pump before the outside rim of the bucket engagesand commences to rotate the water. The suction is greatly increased byextending the lower ends of the blades beyond the lower edge oft-he rim,and the water-wheel is enabled to lift a greater body of water'in lesstime than i-tcould were the blades terminated at the loweredge of therim. The hub is interiorly threaded to-receive the reduced'threaded ends31 of the sections of the vertical shaft. in the accompanying drawingstwo wheels are shown, andthe hub of the upper wheel serves as'a"couplingfor the-upper and lower sections of the shaft.

When the shaft is rotated, the wheels will operate to throw the waterupward, as will be readily apparent, and the upper end of thewell-casing is open and extends into t'he bot' tom of an inclined spout32, thereby obviating the necessity of forcing the water through alateral opening. By this arrangement the capacity of the pump isgreatlyinoreased and less'power is required foroperating it than similarpumps having lateral discharge-apertures. The spout, which is mountedbetween the side bars, is provided with'an inclined bottom, and it hasopposite sides which are secured to the inner faces of the side bars, asindicated in 3 of the drawings. The'spout is provided at its upper endwith a wall 33, and its lower end. is designed to empty'into a suitabletank or reservoir. The discharge-spout may be arranged in any desiredmanner with relation to the reservoir or other receptacle for the water.

The vertical shaft is provided between the cross-bars 3 and 4 of thesupporting-frame with a pulley 34, adapted to receive a drivebelt; butany other suitable means may be employed for rotating the verticalshaft.

Having thus fully described my invention, What I claim as new, anddesire to secure by Letters Patent, is I 1. In a pump of the classdescribed, the combination with a well-casing, of a supporting-framehaving vertical side bars and provided with transverse bars havingparallel end portions arranged at opposite sides of the vertical bars,said transverse bars being also provided with intermediate curvedportions embracing and clamping the Well-casing, the latter beingextended upward between the Vertical side bars of the frame, a verticalshaft journaled on and supported bythe frame, and a rotary water-wheelcarried by the shaft and operating within the well-casing, substantiallyas described.

\ 2. In a pump of the class described, -;the combination with awell-casing open at the top, a supporting-frame receiving thewellcasing, a spout mountedin the frame and having-an inclined bottompierced by the wellcasing, the latter beingterminated vshort of theupper edgesof ther-sides of? the spout, and means forforcing waterupward in the wellcasing, substantially as described.

-3. In a pump of the class described, the combination-with awell-casing,a-supportingframecomposedof vertical sidebars and connecting-pieces,anwinclined spout arranged within-the frame and having its sides securedtothe said vertical bars, said spout being located at the top of thewell-casing and having its bottom pierced bythe same, and means forforcing water upward in'the well-casing, substantially as described.

I. In a pump of the class described, the combination of a well-casing, asupportingframemounted on the top thereof and connectedthereto, a spoutmounted within and connected tothe'frame and extending therefrom, saidspout having an opening in-its bottom-toreceivethe upper end of thewell-casing,'and means for forcing waterupward in the well casing,substantially as described.

5. In a pump of *the class described, the combination with awell-casing, ofa vertical shaft, and arotary water-wheelhaving bladesand provided at its periphery with a cylindrical rim'fitting within :thewell-casing and having a slight-interspace between-it and the saidcasing, whereby a water-cushion is formed, the said blades beingextended below the cylindrical rim to start the water through the wheelbefore the rim operates to rotate the water, substantially as described.6. In a pump of the class described, :the combination with awell-casing, ofa vertical shaft, and a water-wheel com prising an innervertical hub, a cylindrical rim, and a plurality of spiral blades:having innerand outer edgesconnectedrespectively withthe hub and therim, the lower endsof the blades being extended below the *rim to startthewvater through the: pump before the rimoperates to rotate the Water,substantially as de scribed. A

7. In a pump of the class described, the combination with a well-casing,of a vertical shaft, and a Water-wheel comprising an inner vertical hub,a cylindrical rim, and a plurality of spirally-arranged blades connectedat their inner and outer edges with the hub and the rim, the lower edgesof the blades being extended below the rim to start the water throughthe Wheel'before the rim operates to rotate the Water, and the lower endof the hub being also projected below the rim for supporting the blades,substantially as described. l

In testimony that I claim the foregoing as my own I have hereto afiixedmy signature in .the presence of witnesses.

LEWIS P. ERICKSON. Witnesses J. B. COOPER, C. G. MORTON, N. S. CRAIG, E.F. WALKER.

